Config Loader for Golang

Load config into go struct from shell environment and docker/kubernetes secrets.

Install

go get github.com/hack-fan/config

Features

• Load from shell environment variables
• Load from Docker/Kubernetes secrets
• Default values support
• Required check support
• Simple and easy to use, no other features

Load Order

Default -> ENV -> Secret -> Value exists in struct

Right side will overwrite left side.

Quick Start

package main

import (
    "fmt"
    "github.com/hack-fan/config"
)

type Settings struct {
    AppName string `default:"app"` // env APP_NAME will overwrite default value
    DB      struct {
        Name     string
        User     string `required:"true"`
        Password string `secret:"mysql_db_password"` // default secret name is 'db_password',change it use tag
        Port     int    `default:"3306" env:"MYSQL_DB_PORT"` // default env name is 'DB_PORT',change it use tag
    }
}

func main() {
    var settings = new(Settings)
    config.MustLoad(settings)
    fmt.Printf("%+v",settings)
}

Name Conversion

• ENV will use ALL_CAP_SNAKE_CASE
• Secret will use snake_case

Tags

• default set default value
• env custom shell env variable names
• secret custom secret file name
• required set attr as required